Reversing-valve.



No. 860,672. PATENTBD JULY-23, 1907.

, J. B. LADD. REVERSING VALVE.v

APPLICATION FILED MAY 26, 1905.

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PATENT Fries.

JAMES B. LADD, OF WAYNE, PENNSYLVANIA.

REVERSING-VALVE.

Specification of Letters Patent.A

Patented July 23, 1907.

Application filed May 25,1905. Serial No. 262,126.

To all 'whom it may concern:

Be it known that l, .Timms B. LADD, a citizen of the United States,residing at Wayne, Delaware county, and State of Pennsylvania, haveinvented a new and usel'ul Reversing-Valve, of which the following is aspecification.

illy invention relates to improvements in reversing valves such forinstance as are especially useful in connection with filters.

My object is to provide efficient and simple means operated by a singlestem for changing the direction of flow from a source of supply to andfrom the top and bottom of a filter or similar device, and at the sametime opening or closing communication with other pipes, such forinstance, as a. waste pipe and a service pipe.

My device, being provided with tive ports may be properly termed afive-way valve and practically perl'orm the lunctions of live singlevalves.

Referring to the drawings :HFigure 1 is a side elevation of a filterprovided with my improved valve. Fig. 2 is a. front elevation oi same.Fig. 3 is a vertical section ot' the valve on an enlarged scale. Fig` 4is a vertical cross-section on line x-.r of Fig. 3.

Similar numerals reier to similar parts throughout the several views.

As illustrated in the drawings my device comprises a structure havingfive chambers and a corresponding number of ports, one port for eachchamber, Port 1 is connected with the pipe 1 leading from the watersupply under pressure. Port 2 is connected through pipe 2 with -the topoi the filter. Port 3 is connected with the service pipe 3f. Port 4 isconnected with the waste pipe 4, and port 5 is connected by pipe 5 withthe bottom of the filter. The connections oi these ports with thechambers are as follows:-

Port 1 is connected with chamber 8, 2 with chamber 9, 3 with chamber 6,4 with chamber l0 and 5 with chamber 7. These chambers are all adaptedto communicate with each other through openings in separating partitions22, 23, 24 and 25, said openings having a common axis and provided withvalve seats to be controlled by the valve disks 15 and 16. The valvedisks 15 and 16 are mounted on the common stem 12, which is threadedthrough the bracket 14, and operated by hand-wheel 13. lt will now bereadily understood that when the valves are in the position shown inFig. 3, the water or other Huid entering through port 1 into chamber 3is permitted to pass into chamber' 7 and thence through port 5 and pipe5 to the bottom of the filter, thence through and from the top of thefilter to pipe 2/ and port 2 into chamber 9, thence into chamber 10 andthrough port 4 and pipe 4 to waste, as indicated by the arrows in Figs.1 and 2. When, however the positions of valve disks 15 and 16 arereversed, communication is interrupted between chambers 7 and 8, andbetween chambers 9 and 10, while chambers 6 and 7 and chambers 8 and 9are made to communicate with each other respectively. It will now beseen that the fluid entering chamber 8 through port 1, passes to chamber9 and through port 2 to the top oi' the filter, thence through thefilter to port 5, chamber 7, chamber 6 and through port 3 to servicepipe 3, in the direction opposite to that indicated by the arrows shownin Figs. 1 and 2.

The valve disks 15 and 1G are loosely mounted upon the stem 12 and havea slight longitudinal play with respect thereto, said play being takenup or controlled by the spring 17 interposed between said two valvedisks 15 and 16. This is a convenient method of taking up anyinaccuracies in the assembling so as to insure both valve disks closingtightly against'their seats.

As the water Vunder pressure always enters chamber 8 it will be notedthat the operation oi the valve disk, against said pressure, that is, toclose 8 either from 7 or 9, is a positive operation of the stem 12,while the spring pressure exerted upon either valve disk betweenchambers G and 7 and 9/and 10 merely coperates with the water pressureto hold said valve against its coperating seat.

It will also be seen by inspection of' Fig. 3 that the valve seats 18and 19 are threaded in the partitions 22 and 25 respectively, so thatthe same may be removed for admitting the valve disks in assembling thedevice. This is also a convenient construction when it is desired to useValve seats of a different metal than that from which the shell 11 ismade, or when it is desirable to remove the valve seats or repairs, orto replace them when damaged. A similar construction may be provided forthe valve seats in partitions 23 and 24,

What 1 claim isz* 1. In combination with a system comprising a main, aservice pipe, a waste pipe and a receptacle, a reversing valvecomprising a structure containing live chambers, each provided with aport connected as follows, one connected with the main, one withther'service pipe, one with the waste pipe and two with different partsof the receptacle, valve seats positioned between said chambers and aplurality of valve disks operated by a common member' for alternatelycoperating; with each of two .oppositely disposed valve seats, the partsbeing so arranged that by one movement of the Valve disks the flow isreversed through the receptacle and communication with the service pipeor the waste pipe respectively opened or closed as the case may be.

2. In combination with a filter, a main, a service pipe and a wastepipe, a valve for controllingl the flow of water therethrough,comprising a structure having a plurality of communicating chamberspositioned and connected as follows, a chamber connected with the main,an adjoining chamber connected with the top ot' the filter, a cham beradjoining the last mentioned chamber connected with the waste pipe, achamber adjoining on the other side of the first mentioned chamberconnected with the bottom sinon 65e-ningeommunieation between the mainand the 10 bottom of the filter and between the Waste pipe and the topof the filter and to close communication between the service pipe.

JAMES B. LADD.

Witnesses:

LILLIAN M. HUDNUT, LOUISE B. MORRIS.

